 | | | Accessing PSVI through DOM | Accessing PSVI through DOM 2003-05-08 - By Bill Raudabaugh
I've read the doc and looked through the archive of this list for hints on
how to access PSVI through the DOM interface, and while I seem to be very
close to getting it to work, I've hit a brick wall.
The class below is my test case. The XML schema is definitely operating
because the error handler routines are being called for intentional problems
that I've put in my XML for testing. And the cast of the node to ElementPSVI
works fine. But the PSVI information seems doesn't appear to have been
filled in by the validator. All of the nodes show a validity of 0 -> not
known.
I know there are some smart folks out there that have managed to access PSVI
via DOM. If anyone has any ideas on why my validity is always 0 I would
definitely appreciate it.
Bill
import org.apache.xerces.parsers.DOMParser;
import org.apache.xerces.xni.psvi.*;
import org.apache.xerces.impl.xs.psvi.*;
import org.w3c.dom.*;
import org.xml.sax.*;
import java.io.ByteArrayInputStream;
import javax.xml.parsers.*;
public class SchemaTest implements ErrorHandler {
public static void main(String argv[]) throws Exception {
Document doc;
DocumentBuilderFactory factory =
DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
factory.setValidating(true);
factory.setAttribute("http://java.sun.com/xml/jaxp/properties/schemaLanguage
",
"http://www.w3.org/2001/XMLSchema");
factory.setAttribute("http://apache.org/xml/properties/dom/document-class-na
me",
"org.apache.xerces.dom.PSVIDocumentImpl");
DocumentBuilder parser = factory.newDocumentBuilder();
parser.setErrorHandler(new SchemaTest());
String xml = "<scheduler" +
" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" " +
" xsi:noNamespaceSchemaLocation=\"http://adivo.com/Scheduler.xsd\">" +
"<jobs><group><job></job></group></jobs></scheduler>";
ByteArrayInputStream xmlStream = new ByteArrayInputStream(xml.getBytes());
InputSource source = new InputSource(xmlStream);
doc = parser.parse(source);
checkPSVI(doc.getDocumentElement());
}
private static void checkPSVI(Node node) {
ElementPSVI elem = (ElementPSVI) node;
System.out.println(node.getNodeName() + " validity=" +
elem.getValidity());
NodeList children = node.getChildNodes();
int length = children.getLength();
for (int i=0; i < length; i++) {
Node child = children.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE)
checkPSVI(child);
}
}
public void warning(SAXParseException ex) {
System.out.println(ex.toString());
}
public void error(SAXParseException ex) {
System.out.println(ex.toString());
}
public void fatalError(SAXParseException ex) {
System.out.println(ex.toString());
}
}
Bill Raudabaugh
Adivo Ltd
email: bill@(protected)
Phone: (614)766-6870
Fax: (614)573-7101
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